21307188

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:421

約数の個数: 96

約数和(自身を含む): 61737984

約数和(自身を除く): 40430796

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 43, 51, 68, 84, 86, 102, 119, 129, 172, 204, 238, 258, 301, 347, 357, 476, 516, 602, 694, 714, 731, 903, 1041, 1204, 1388, 1428, 1462, 1806, 2082, 2193, 2429, 2924, 3612, 4164, 4386, 4858, 5117, 5899, 7287, 8772, 9716, 10234, 11798, 14574, 14921, 15351, 17697, 20468, 23596, 29148, 29842, 30702, 35394, 41293, 44763, 59684, 61404, 70788, 82586, 89526, 104447, 123879, 165172, 179052, 208894, 247758, 253657, 313341, 417788, 495516, 507314, 626682, 760971, 1014628, 1253364, 1521942, 1775599, 3043884, 3551198, 5326797, 7102396, 10653594, 21307188]

約数ペア:

[(1, 21307188), (2, 10653594), (3, 7102396), (4, 5326797), (6, 3551198), (7, 3043884), (12, 1775599), (14, 1521942), (17, 1253364), (21, 1014628), (28, 760971), (34, 626682), (42, 507314), (43, 495516), (51, 417788), (68, 313341), (84, 253657), (86, 247758), (102, 208894), (119, 179052), (129, 165172), (172, 123879), (204, 104447), (238, 89526), (258, 82586), (301, 70788), (347, 61404), (357, 59684), (476, 44763), (516, 41293), (602, 35394), (694, 30702), (714, 29842), (731, 29148), (903, 23596), (1041, 20468), (1204, 17697), (1388, 15351), (1428, 14921), (1462, 14574), (1806, 11798), (2082, 10234), (2193, 9716), (2429, 8772), (2924, 7287), (3612, 5899), (4164, 5117), (4386, 4858)]